Porthidium arcosae (Manabí Hognosed Pitvipers)
Porthidium arcosae Schätti & Kramer, 1993
This species is distinguished from other vipers of Ecuador by the following combination of characters: (1) tail not prehensile; (2) lacunolabial absent; (3) about 33 undivided subcaudal scales; (4) ventral scales 159-168; (5) pale postocular stripe; (6) middorsal scale rows about 27; (7) tip of…
